This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
mathematica cg parametricplotd texture torus knot code program algorithm geometric sculpture geometricsculpture shape geometry sculpture mapping abstract design pattern graphic structure symmetry algorithm foliage plant indoor black background organic pattern center hole size of torus number of cross